<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<title></title>
	<style type="text/css">
		 .box{
		 	width: 1200px;
		 	height: 600px;
		 	background: aqua;
		 	display: flex;
			/*	flex-flow: 将flew-direction和flew-warp结合了	 	*/
		 	flex-flow: row wrap;
		 }
		 .box div{
		 	width: 200px;
		 	height: 100px;
		 	margin: 10px;
		 	background: pink;
		 }
	</style>
</head>
<body>
	<div class="box">
		<div>1</div>
		<div>2</div>
		<div>3</div>
		<div>4</div>
		<div>5</div>
		<div>6</div>
		<div>7</div>
		<div>8</div>
		<div>9</div>
	</div>
</body>
</html>